Hey guys, my cooper has been running alittle rough (hesitation between 2k-3krpm) the past few weeks so i've invested in a new K&N panel filter and some NGK plugs. I also want to reset the ecu to banish any dodgy values but can't find a guide on how.

I assume it's disconnect the battery for 10mins
reconnect battery start car without touching any pedals
allow to tick over and learn idle
wait for fans to kick in then fans to stop (showing engine fully warmed)
then go for a good blast to learn my driving style

Disconnecting the battery will soft reset the ECU (eg clears certain emissions and other warning lights etc) Usually only requires 30 seconds of disconnection. Wont clear the ECU settings though or the stored fault codes.

TBH the MINI will adapt to a very limited amount as you drive it anyhow, theres no real need to reset the ECU

Hi guys, i cannot use this procedure on my 09/2001 mini cooper, i am not too sure why ..but as Tommy T also experienced in a previous thread,we do not get the full list of functional numbers in the test menu but only have 6, 10 and 21 to choose from,however if i go to 21 and wait the display goes off the dials flicker with some noise and everything then restores to the previous state.
But i am not too sure if the ECU has been reset.

Disconnecting the battery will soft reset the ECU (eg clears certain emissions and other warning lights etc) Usually only requires 30 seconds of disconnection. Wont clear the ECU settings though or the stored fault codes.

TBH the MINI will adapt to a very limited amount as you drive it anyhow, theres no real need to reset the ECU

Do you think this would be a helpful thing to do after installing an open cone air filter, having previously run the stock air intake?

As Partsman stated, this is really not an ECU reset at all. My understanding in all of this (having spoken to several tuners) is that the only way to really reset the ECU is to actually flash it.

Now, that being said, people "claim" that the car feels different after the dash reset but there is no proof and when I did it to my MINI I felt no difference. Maybe my butt is not sensitive enough.

Ummm the only correct way to do it is how I do it with my laptop and using the proper ECU development tools. Nothing else that I have found lets you reset so much e.g. all the adpations (Theres many of them). Well unless you go to BMW anyway and then they can do the same.

But like I said above that reset was taken from the FAQs a while back and it does seem different after it has been done. but maybe my butt dyno just went numb and I was getting different sensations.

Ummm the only correct way to do it is how I do it with my laptop and using the proper ECU development tools. Nothing else that I have found lets you reset so much e.g. all the adpations (Theres many of them). Well unless you go to BMW anyway and then they can do the same.

But like I said above that reset was taken from the FAQs a while back and it does seem different after it has been done. but maybe my butt dyno just went numb and I was getting different sensations.

Ok, I use the term "flash" lightly so let me clarify. I have MTH which uploads or flashes the ECU with new tables. Thus resetting them. However, you are correct, you have to have proper software to do this.

That one bit in the FAQ has always been a bit controversial and the folks that I have spoken to at MTH and at others say that the reset mentioned does nothing for the ECU.

That being said many argue it and claim that it does work (didn't for me). Personally I don't think that it does anything for the ECU (maybe the BC1) but without a MINI technical background it is hard to fully grasp.